Upperparts pinkish buff in summer, gray in winter; underparts white. Single white stripe on each side. Tail grayish above, mixed black and white below. Ears small. 8 5/8-9 7/8" (220-250 mm); tail 2 7/8-3 3/4" (74-94 mm).… read more
Buff above in summer, gray in winter; 1 narrow white stripe on each side. Underparts white. Tail pure white below, with black-tipped hairs forming narrow black border; 1 black band above. Ears small. 7 5/8-9 3/8" (194-239 mm); tail 2 1/8-3 3/8" (54-87 mm).… read more
Yellowish brown or buffy above, with 1 white stripe on each side; tail white below. 9-10 1/2" (230-267 mm); tail 2 5/8-3 1/8" (66-78 mm).… read more
Yellowish buff mixed with black above; slightly paler below. Short, white-tipped tail. Terminal half of tail grayish white in center. 12 1/8-14 3/4" (309-373 mm); tail 1 1/2-2 5/8" (39-68 mm).… read more
Pinkish buff mixed with black above; slightly paler below. Short, white-tipped tail; terminal half entirely white. Dark patches above and below eyes; yellowish nose. Small ears. 13 3/8-14 1/2 " (340-370 mm); tail 1 5/8-2 1/2" (40-65 mm).… read more
Pinkish brown above; whitish or buffy white below. Slim, sparsely haired tail with black tip unique among prairie dogs. Short, rounded ears; large black eyes. 14-16 3/8" (355-415 mm); tail 2 7/8-4 1/2" (72-115 mm).… read more
In summer, reddish (ranging from tawny olive to clay) above, mixed with black-tipped hairs; slightly paler below. Short, white-tipped tail; outer half has white center. 12-14 1/4" (305-360 mm); tail 1 1/8-2 1/4" (30-57 mm).… read more
Soft fur, rich brown above, white below; abdominal hairs usually gray at base. Loose fold of skin between forelegs and hindlegs. Tail looks flattened; dark brown above, white below. Large black eyes. 10 3/8-14 1/2" (263-368 mm); tail 4 1/2-7" (115-175 mm).… read more
Very silky coat grayish brown above, white below, with hairs all white from tip to base. Loose fold of skin between foreleg and hindleg. Flattened, gray-brown tail. Large black eyes. 7 3/4-10 1/8" (198-255 mm); tail 3 1/8-4 3/4" (81-120 mm).… read more
Dark, grizzled gray above; reddish back; belly white. Tail bordered with white above, all white below. Tasseled ears reddish on backs; tassels reduced in summer. In Colorado, some individuals are all black. 18 1/4-23" (463-584 mm); tail 7-10" (185-255 mm).… read more
A plain gray, white-bellied tree squirrel. Relatively long tail fringed with white. No ear tufts. 20-22" (506-568 mm); tail 9 3/8-12 1/4" (240-310 mm).… read more
Gray above; buff underfur showing on head, back, feet; underparts paler gray. Flattened tail bushy, gray with silvery-tipped hairs. In Canada, may have rufous belly, tail. All-black form common in north. 17-19 3/4" (430-500 mm); tail 8 1/4-9 3/8" (210-240 mm).… read more
Gray with numerous white-tipped hairs above; belly white. Backs of ears reddish brown. Long, bushy tail with bands of gray, white, and black, especially below. 17 1/2-23" (445-593 mm); tail 9 3/8-12 1/4" (240-310 mm).… read more
3 color phases: in Northeast, gray above, yellowish below; in western part of range, bright rust below; in South, black, often with white on face and tail tip. Large, bushy tail with yellow-tipped hairs. 17 7/8-28" (454-698 mm); tail 7 7/8-13" (200-330 mm).… read more
A large tree squirrel. Gray above, whitish below. Large, bushy tail with black stripe on edges. L 21 1/2–23 1/2" (560–600 mm); T 10 1/2–11 1/4" (260–285 mm); HF 2 7/8–3 1/8" (73–81 mm).… read more
Brownish to buff above; sides paler; belly buff. Tail buff mixed with black, with pinkish edge. Snout and ears cinnamon; grayish dappling on head; sides of face and neck gray. Forelegs buff; hindlegs cinnamon. 11-12" (280-304 mm); tail 2 1/2-3 1/8" (63-81 mm).… read more
Brownish, with buff flecks; whitish wash from sides of neck across shoulders and forelegs to haunches, enclosing dark, forward-pointing V on upper back. Bushy tail brownish gray, edged with white. 14-19 3/4" (357-500 mm); tail 5 3/4-8 7/8" (145-227 mm).… read more
Gray washed with pinkish above; broad brown streak down mid-back. Top of head pinkish. Pale gray below, with pinkish wash. Black-tipped tail, pinkish gray above, reddish to hazel below, edged with pinkish buff. 9-11 3/4" (230-300 mm); tail 1 3/4-3" (44-76 mm).… read more
Grayish mixed with black above, with indistinct buff spotting. Front of face, forelegs, and belly reddish brown. Forefeet buff. Bushy tail mostly reddish, edged with white and with some black hairs above. 12 7/8-16 1/8" (327-410 mm); tail 3-4 3/4" (77-120 mm).… read more
Pale drab above with grayish or buffy flecks. Nose cinammon; ears large. Tail relatively long, edged with buff or white; underside buffy or light brown. 10-12 1/8" (253-307 mm); tail 2 5/8"-3 7/8" (66-100 mm).… read more
Back gray, brownish, or buff. Head and shoulders coppery red, forming golden mantle. Belly whitish. 1 white stripe bordered by black stripes on each side; no stripes on face. 9-12 1/8" (230-308 mm); tail 2 1/2-4 5/8" (63-118 mm).… read more
Brown, with about 9 rows of squarish white spots on back; belly whitish or buff. Long, moderately bushy tail. Small rounded ears. Males larger than females. 11-15" (280-380 mm); tail 4 1/4-6 1/2" (110-166 mm).… read more
Pinkish gray above; belly white. No mottling or stripes. Short, thin tail cinnamon above, white below. Cheeks brownish. 8 5/8-9" (219-230 mm); tail 2 1/4-2 7/8" (57-73 mm).… read more
A large ground squirrel. Back reddish to grayish brown, with numerous whitish flecks; head and shoulders tawny to reddish. In winter, upperparts are grayer. Underparts and legs are yellowish or tawny. 11 3/4-15 1/2" (300-395 mm); tail 3-5 3/8" (77-135 mm).… read more
Gray or yellowish gray above, tinged with brown or buff and indistinctly mottled. Underparts whitish or pale buff. Tail bordered with white or buff; light brownish or buff below. 9 3/4-14" (248-355 mm); tail 2 1/2-3 7/8" (65-100 mm).… read more
Back dark gray-brown; head and shoulders russet. 1 white stripe on each side, bordered above and below by faint black stripes. 11 1/4-12 3/8" (286-315 mm); tail 3 5/8-4 5/8" (92-118 mm).… read more
Grayish or brownish above, with small, squarish, indistinct pale spots scattered on back. Belly whitish. Rather scantily haired tail similar to back, with black tip; buff below. Ears small. 7 1/4-10" (185-253 mm); tail 2 1/8-3 5/8" (55-92 mm).… read more
Various shades of cinnamon, with drab grayish cast above, slightly paler below. No stripes or mottling. Tail round, long, slender, not bushy; cinnamon or drab below. 8-11" (204-278 mm); tail 2 3/8-4 3/8" (60-112 mm).… read more
Plain gray above, with pinkish tinge; belly whitish or buff. Short tail reddish or tawny below, with white edge. Face and hindlegs reddish. 6 5/8-10 3/4" (167-271 mm); tail 1 1/4-2 7/8" (32-72 mm).… read more
Brownish, with 13 alternating brown and whitish longitudinal lines (sometimes partially broken into spots) on back and sides. Rows of whitish spots within dark lines. 6 3/4-11 5/8" (170-297 mm); tail 2 3/8-5 1/4" (60-132 mm).… read more
Mottled above, grayish brown in front, brownish black behind; buff-white or pinkish buff below. Long bushy tail variegated buff and brown with white edges. 17-21" (430-540 mm); tail 6 3/4-9 7/8" (172-252 mm).… read more
Tawny to pinkish cinnamon, with 5 bold dark stripes, evenly spaced, equal in width. Central 3 stripes extend to rump; lateral 2 to mid-body. Black lower eye stripe. Ears blackish in front, whitish behind. 7 1/8-9 5/8" (181-245 mm); tail 3-4 1/4" (75-108 mm).… read more
Dark grayish, with paler gray neck and shoulders. Largely gray cheeks, upper back, and shoulders unique among chipmunks. 5 black or brown stripes and 4 pale stripes on back; outer stripes may be faint. 8 1/4-10" (208-255mm); tail 3 1/8-4 1/2" (80-115 mm).… read more
Grayish, with stripes on body indistinct or absent; often more distinct on sides of head. Bushy tail rust-red below. 7 5/8-10 7/8" (195-277 mm); tail 3 3/8-5 1/2" (85-140 mm).… read more
Grayish brown above; belly white. Stripes indistinct, nearly equal in width: dark stripes gray or brown; pale stripes grayish. Dull black spots around eyes; brownish stripe below ear. Tail with pale edge. 8 1/4-11" (208-280 mm); tail 3 1/2-5 1/2" (89-140 mm).… read more
In drier regions, muted yellowish gray above with dark stripes tan; in moister areas, brownish gray with black side stripes. Pale stripes white, of equal width. White areas on flanks. Sides orange brown. 6 5/8-9" (167-227 mm); tail 2 3/4-4 1/2" (70-114 mm).… read more
Top of head pale gray shaded with pinkish. Facial stripes brown; eye stripe black. Dark back stripes are brown or russet; median stripe black behind. Median light stripes smoke gray, outer pair paler. 8 1/4-9 3/8" (208-240 mm); tail 3 5/8-4" (91-100 mm).… read more
Brightly colored, with reddish or tawny back; gray head and rump. Outer dark stripes on back indistinct; inner ones reddish or grayish. Head gray on top; upper eye stripe black, lower one brown. 7 1/2-8 5/8" (192-220 mm); tail 3 1/8-4" (80-102 mm).… read more
Head cinnamon to gray. White below; tawny wash on sides. 3 median black stripes with yellow-orange margins; outer stripes brown. Shoulders gray. Rump, thighs cinnamon-buff. Tail black-tipped, white-bordered. 8-9 3/8" (205-240 mm); tail 3 3/8-4" (85-105 mm).… read more
Deep tawny above and on sides; gray rump contrasts with front of body. Tail rufous above, dark reddish below. 3 median stripes on back black; outer stripes brownish. 2 white and 3 brown stripes on cheeks. 8 3/4-9 3/4" (223-248 mm); tail 4-4 3/4" (101-122 mm).… read more
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